1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
artcher [175]
3 years ago
8

7. Un niño tiene 35 kg esta sobre un trineo que tiene una masa de 5 kg. Si el niño y el trineo

Physics
1 answer:
FrozenT [24]3 years ago
7 0

Answer:

<em>El niño y el trineo se mueven a 3.61 m/s</em>

Explanation:

<em><u>Energía Cinética</u></em>

Un cuerpo de masa m que se mueve con rapidez v, posee una energía cinética de:

\displaystyle K =\frac{1}{2}mv^2

Se nos dice que un niño de 35 Kg está sobre un trineo de 5 Kg y ambos viajan juntos. La masa total del conjunto es m=40 Kg.

Además sabemos que su energía cinética es de 260 J y requerimos calcular su velocidad.

Eso lo haremos despejando v de la ecuación anterior:

\displaystyle v =\sqrt{\frac{2K}{m}}

\displaystyle v =\sqrt{\frac{2*260}{40}}

\displaystyle v =\sqrt{13}

v = 3.61 m/s

El niño y el trineo se mueven a 3.61 m/s

You might be interested in
A sock with a mass of 0.03 kg is stuck to the inside of a clothes dryer spins
ValentinkaMS [17]

Answer:

15.71 m/s

Explanation:

We are given;

Time; t = 0.2 s

Radius; r = 0.5 m

The circumference will give us the distance covered.

Formula for circumference is 2πr

Thus; Distance = 2πr = 2 × π × 0.5 = π

Linear speed = distance/time = π/0.2 = 15.71 m/s

5 0
3 years ago
There is more than one answer
Sveta_85 [38]

Explanation:

the answers are the first 3.

5 0
3 years ago
Read 2 more answers
Which of the following does each different kind of atom represent?
r-ruslan [8.4K]

Answer:

B

Explanation:

because atoms make up an element.

5 0
4 years ago
Read 2 more answers
Which picture represents 2NO2?
wariber [46]
2NO2 means that there is 2 oxygen atoms and one nitrogen with two sets of that. So its the third one

3 0
4 years ago
Read 2 more answers
What happens to light when it travels from air into water
spin [16.1K]

Answer:

Water is more dense than air. When water goes through a denser thing, the light is "bent" more towards the "normal" which is a straight, vertical line.

Follow me on  i n s t a g r a m, message me and I'll follow you back: ifaulkner24

8 0
2 years ago
Other questions:
  • A woman steps in front of a child to keep him from running off. which term best describes this example? negative work positive w
    9·2 answers
  • How many neutrons would a element that has a atomic number of 22 and a atomic mass of 40 have? (this is not based on a element f
    14·1 answer
  • Which law describes the speed at which objects travel at different points in their orbits?
    15·1 answer
  • All atoms of the element potassium have 19 protons. One of the most stable types of potassium atoms has the mass number 39. How
    12·2 answers
  • A projectile of mass m is fired straight upward from the surface of an airless planet of radius R and mass M with an initial spe
    7·1 answer
  • Spaceship 1 and Spaceship 2 have equal masses of 300 kg. Spaceship 1 has
    15·1 answer
  • Lindsey started biking to the park traveling 15 mph, after some time the bike got a flat so Lindsey walked the rest of the way,
    6·1 answer
  • Sarah and her bicycle have a total mass of 40 kg. Her speed at the top of a 10 m high and 100m long hill is 5 m/s. If the force
    14·1 answer
  • How would you describe the atmosphere to a friend.
    7·1 answer
  • A mercury manometer is connected to a container of gas. (a) The height of the mercury column on the side connected to the gas is
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!